sane-plustek_pp.5



sane-plustek_pp(5)       SANE Scanner Access Now Easy       sane-plustek_pp(5)


NAME

       sane-plustek_pp  - SANE backend for Plustek parallel port flatbed scan-
       ners


DESCRIPTION

       The sane-plustek_pp library implements a SANE (Scanner Access Now Easy)
       backend  that  provides access to Plustek ASIC 9600[1/3] and P9800[1/3]
       based parallel port flatbed scanners.


SUPPORTED DEVICES

       At present, the following scanners should work with this backend:

       PLUSTEK SCANNERS

       Parallelport Model:    ASIC: Properties:
       ---------------------- ----- ------------------------
       OpticPro PT12          98003 600x1200 dpi 36bit 512Kb
       OpticPro P12           98003 600x1200 dpi 36bit 512Kb
       OpticPro 9636T/12000T  98001 600x1200 dpi 36bit 512Kb
       OpticPro 12000P Turbo  98001 600x1200 dpi 36bit 512Kb
       OpticPro 9636P+/Turbo  98001 600x1200 dpi 36bit 512Kb
       OpticPro 9636P         96003 600x1200 dpi 36bit 128Kb
       OpticPro 12000P/96000P 96003 600x1200 dpi 36bit 128Kb
       OpticPro 1236P         96003 600x1200 dpi 30bit 128Kb
       OpticPro 9600P         96003 600x1200 dpi 30bit 128Kb
       OpticPro 9630P/FBIV    96003 600x1200 dpi 30bit 128Kb
       OpticPro 9630PL (14")  96003 600x1200 dpi 30bit 128Kb
       OpticPro A3I           96003  400x800 dpi 36bit 128Kb
       OpticPro 600P/6000P    96003  300x600 dpi 30bit  32Kb
       OpticPro 4831P         96003  300x600 dpi 30bit  32Kb
       OpticPro 4830P/FBIII   96003  300x600 dpi 30bit  32Kb
       OpticPro 4800P/FBII    96001  300x600 dpi 24bit  32Kb

       PRIMAX SCANNERS

       There are some scanners sold by Primax, but they are  in  fact  Plustek
       devices.  These  scanners are also supported.  The following table will
       show the relationship:

       Model:                      Plustek Model:  Remarks:
       --------------------------- --------------  ------------
       Colorado 4800               OpticPro 4800   not tested
       Compact 4800 Direct         OpticPro 600    mov=2
       Compact 4800 Direct 30bit   OpticPro 4830   mov=7
       Compact 9600 Direct 30bit   OpticPro 9630   works

       GENIUS SCANNERS

       The following devices are sold as Genius  Scanners,  but  are  in  fact
       Plustek devices.  The table will show the relationship:

       Model:                      Remarks:
       --------------------------- ----------------------------
       Colorpage Vivid III V2      Like P12 but has two buttons
                                   and Wolfson DAC

       ARIES SCANNERS

       There's one scanner sold as Aries Scanner, but is in fact a Plustek de-
       vice.  The following table will show the relationship:

       Model:                      Plustek Model:  Remarks:
       --------------------------- --------------  ------------
       Scan-It 4800                OpticPro 600    mov=2

       BrightScan SCANNERS

       There's one scanner sold as BrightScan OpticPro Scanner, this is also a
       rebadged  Plustek  device.  The following table will show the relation-
       ship:

       Model:                      Remarks:
       --------------------------- ----------------------------
       BrightScan OpticPro         OpticPro P12


DEVICE NAMES

       This backend's default device is:

              0x378

       This "default device" will be used if  no  configuration  file  can  be
       found. It is the base address of the parallel port on i386 machines.

       As  the  backend supports up to four devices, it is possible to specify
       them in the configuration file

              /usr/local/etc/sane.d/plustek_pp.conf

       See this file for examples.


CONFIGURATION

       This section describes the backend's configuration file  entries.   The
       file is located at: /usr/local/etc/sane.d/plustek_pp.conf

       For a proper setup, you will need at least two entries:

              [direct]
              device 0x378

       direct  tells  the  backend, that the following devicename (here 0x378)
       has to be interpreted as parallel port scanner device. In  fact  it  is
       the  address  to  use.  Alternatively  you can use /dev/parport0 if the
       backend has been compiled with libieee1284 support.

       Further options:

       option warmup t
              t specifies the warmup period in seconds

       option lampOff t
              t is the time in seconds for switching off the lamps in  standby
              mode

       option lOffonEnd b
              b specifies the behaviour when closing the backend, 1 --> switch
              lamps off, 0 --> do not change lamp status

       option mov m
              m is the model override switch, which only works in direct mode.

              m = 0  default: no override

              m = 1  OpticPro 9630PL override (works if OP9630  has  been  de-
                     tected) forces legal size (14")

              m = 2  Primax  4800Direct  override (works if OP600 has been de-
                     tected) swaps red/green color

              m = 3  OpticPro 9636 override (works  if  OP9636  has  been  de-
                     tected) disables backends transparency/negative capabili-
                     ties

              m = 4  OpticPro 9636P override (works if  OP9636  has  been  de-
                     tected) disables backends transparency/negative capabili-
                     ties

              m = 5  OpticPro A3I override (works  if  OP12000  has  been  de-
                     tected) enables A3 scanning

              m = 6  OpticPro  4800P  override  (works  if  OP600 has been de-
                     tected) swaps red/green color

              m = 7  Primax 4800Direct 30bit override  (works  if  OP4830  has
                     been detected)

       See the plustek_pp.conf file for examples.


PARALLEL PORT MODES

       The  current  driver works best, when the parallel port has been set to
       EPP-mode. When detecting any other mode such as ECP or PS/2 the  driver
       tries  to  set  to a faster, supported mode. If this fails, it will use
       the SPP mode, as this mode should work with all Linux supported  paral-
       lel  ports.  If in doubt, enter your BIOS and set it to any mode except
       ECP.

       Former Plustek scanner models (4830, 9630) supplied a ISA parallel port
       adapter card. This card is not supported by the driver.

       The  ASIC 96001/3 based models have sometimes trouble with high resolu-
       tion modes. If you encounter sporadic corrupted  images  (parts  dupli-
       cated or shifted horizontally) kill all other applications before scan-
       ning and (if sufficient memory available) disable swapping.

       See the plustek_pp.conf file for examples.


FILES

       /usr/local/etc/sane.d/plustek_pp.conf
              The backend configuration file

       /usr/local/lib/sane/libsane-plustek_pp.a
              The static library implementing this backend.

       /usr/local/lib/sane/libsane-plustek_pp.so
              The shared library implementing this backend (present on systems
              that support dynamic loading).


ENVIRONMENT

       SANE_CONFIG_DIR
              This environment variable specifies the list of directories that
              may contain the configuration file.  On *NIX systems, the direc-
              tories are separated by a colon (`:'), under OS/2, they are sep-
              arated by a semi-colon (`;').  If this variable is not set,  the
              configuration  file  is  searched  in  two  default directories:
              first, the current working directory (".") and then in  /usr/lo-
              cal/etc/sane.d.   If  the value of the environment variable ends
              with the directory separator character, then the default  direc-
              tories  are searched after the explicitly specified directories.
              For example, setting SANE_CONFIG_DIR to "/tmp/config:" would re-
              sult in directories tmp/config, ., and /usr/local/etc/sane.d be-
              ing searched (in this order).

       SANE_DEBUG_PLUSTEK_PP
              If the library was compiled with debug support enabled, this en-
              vironment  variable  controls  the debug level for this backend.
              Higher debug levels increase the verbosity of the output.

              Example: export SANE_DEBUG_PLUSTEK_PP=10


SEE ALSO

       sane(7), xscanimage(1),
       /usr/local/share/doc/sane-backends/plustek/Plustek-PARPORT.changes


CONTACT AND BUG-REPORTS

       Please send any information and bug-reports to:
       SANE Mailing List

       Additional info and hints can be obtained from our mailing-List archive
       at: http://www.sane-project.org/mailing-lists.html.

       To  obtain debug messages from the backend, please set the environment-
       variable SANE_DEBUG_PLUSTEK_PP before calling your favorite SANE front-
       end (e.g.  xscanimage(1)):

       export SANE_DEBUG_PLUSTEK_PP=20 ; xscanimage

       The value controls the verbosity of the output.


KNOWN BUGS & RESTRICTIONS

       * The Halftoning works, but the quality is poor

       *  Printers (especially HP models) will start to print during scanning.
       This in fact is a problem to other printers  too,  using  bidirectional
       protocol (see www.plustek.com (TAIWAN) page for further details)

       *  The  driver does not support these manic scalings up to 16 times the
       physical resolution. The only scaling is done  on  resolutions  between
       the  physical  resolution  of the CCD-sensor and the stepper motor i.e.
       you have a 600x1200 dpi scanner and you are scanning using  800dpi,  so
       scaling  is  necessary, because the sensor only delivers 600dpi but the
       motor is capable to perform 800dpi steps.

       * On some devices, the pictures seems bluish

       ASIC 98001 based models:

       * The 300dpi transparency and negative mode does not work correctly.

       * There is currently no way to distinguish a  model  with  and  without
       transparency unit.

       * The scanned images seem to be too dark (P9636T)

       ASIC 96003/1 based models:

       * 30bit mode is currently not supported.

       *  On low end systems under heavy system load the driver may lose data,
       which can result in picture corruption or cause the sensor to  hit  the
       scan bed.

       * The scanning speed on 600x1200 dpi models is slow.

       * The scanning quality of the A3I is poor.


                                  14 Jul 2008               sane-plustek_pp(5)

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